from pathlib import Path
import zipfile

SRC = Path(r"D:\medicusbackup\MEDICUS_2026-01-24_17-07-44.fbk")
DST = SRC.with_suffix(".zip")

total = SRC.stat().st_size
processed = 0
chunk = 8 * 1024 * 1024  # 8 MB

with zipfile.ZipFile(
    DST,
    "w",
    compression=zipfile.ZIP_DEFLATED,
    compresslevel=9,
) as zf:

    zi = zipfile.ZipInfo(SRC.name)
    zi.compress_type = zipfile.ZIP_DEFLATED

    # ⬇⬇⬇ DŮLEŽITÉ ⬇⬇⬇
    with zf.open(zi, "w", force_zip64=True) as z:
        with open(SRC, "rb") as f:
            while True:
                buf = f.read(chunk)
                if not buf:
                    break

                z.write(buf)
                processed += len(buf)

                pct = processed * 100 / total
                print(
                    f"\rZIP: {pct:6.2f}%  ({processed//1024//1024} MB)",
                    end="",
                    flush=True,
                )

print("\nHotovo.")